Table 10-7 Assignment Of Status Bytes - Siemens SIMATIC S7-400H System Manual

Using I/Os in S7-400H
10.5 Connecting redundant I/Os
Evaluating the passivation status of individual module pairs by means of MODUL_STATUS_WORD
MODUL_STATUS_WORD is located in the instance DB of FB 453 "RED_STATUS". The two
status bytes provide information about the status of individual module pairs.
MODUL_STATUS_WORD is an output parameter of FB 453 and can be interconnected
accordingly.
Table 10-7 Assignment of status bytes
Bit Meaning
Status byte 1
0 0 = Passivation of module–Low triggered by OB 82
1 = No passivation of module–Low triggered by OB 82
1 0 = passivation of module–Low triggered by OB 82
1 = no passivation of module–Low triggered by OB 82
2 0 = Overflow or underflow (at analog input modules)
1 = No overflow or underflow
3 0 = Channel information is available
1 = Channel information is not available
4 0 = At least one discrepancy time expired (at input modules)
1 = No discrepancy time expired
5 0 = Module pair is discrepant (at input modules)
1 = Module pair is not discrepant
6 0 = Module–Low passivated
1 = Module–Low depassivated
7 0 = Module–High passivated
1 = Module–High depassivated
Status byte 2
0 In the case of module-granular redundancy: Reserve
In the case of channel-granular redundancy:
0 = At least one channel of module-Low is passivated
1 = No channel of module-Low is passivated
1 In the case of module-granular redundancy: Reserve
In the case of channel-granular redundancy:
0 = At least one channel of module-High is passivated
1 = No channel of module-High is passivated
2 0 = No enable for depassivation of module-Low after outgoing event in OB 85
1 = Enable for depassivation of module-Low after outgoing event in OB 85
3 0 = No enable for depassivation of module-High after outgoing event in OB 85
1 = Enable for depassivation of module-High after outgoing event in OB 85
4 0 = No enable for depassivation of module-Low after outgoing event in OB 82
1 = Enable for depassivation of module-Low after outgoing event in OB 82
5 0 = No enable for depassivation of module-High after outgoing event in OB 82
1 = Enable for depassivation of module-High after outgoing event in OB 82
6 0 = Passivation of module–Low triggered by OB 85
1 = No passivation of module–Low triggered by OB 85
7 0 = passivation of module–Low triggered by OB 85
1 = no passivation of module–Low triggered by OB 85
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System Manual, 09/2007, A5E00267695-03
S7-400H